package com.gq.common.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;

import com.gq.common.filter.helper.BodyReaderHttpServletRequestWrapper;

public class HttpServletRequestReplacedFilter implements Filter
{
    
    @Override
    public void init(FilterConfig filterConfig) throws ServletException
    {
        // TODO Auto-generated method stub
        
    }
    
    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException
    {
        ServletRequest requestWrapper = null;
        if (request instanceof HttpServletRequest)
        {
            requestWrapper = new BodyReaderHttpServletRequestWrapper((HttpServletRequest) request);
        }
        if (requestWrapper == null)
        {
            chain.doFilter(request, response);
        }
        else
        {
            chain.doFilter(requestWrapper, response);
        }
        
    }
    
    @Override
    public void destroy()
    {
        // TODO Auto-generated method stub
        
    }
    
}
